TEHRAN (INIC) -- Iranian researchers from Amirkabir University of Technology used nanotechnology to improve the properties of coatings rich in zinc.
The researchers believe that the two properties of high electrical conduction and low permeability of the suggested nanocomposite are the cause of the improvement.

Coatings rich in zinc contain high amount of zinc powder due to the nature of their performance. This high percentage results in reduction in the applicable properties of the coating such as adhesion, mechano-physical properties and creation of pores. The presence of pores results in fast consumption of the active zinc powder and it decreases the life of the coating. In this research, it was tried to improve barrier effect properties in the coating by using polyaniline – clay nanocomposite while its other properties remain unchanged.

According to Dr. Morteza Ebrahimi, a member of the Scientific Board of Amir Kabir University of Technology, the life of coatings enriched with zinc can be significantly increased in case this nanocomposite is used in the production of the coatings. This fact results in the reduction in the number of paintings, increasing the period between maintenance and replacement of the coating, and finally, it decreases the costs.

Results of the research show that in case only one percent of zinc powder is replaced with polyaniline – clay nanocomposite produced in this research, passage of vapor decreases more than 50%. In addition, the open circuit potential of steel samples with the coating modified with the proposed nanocomposite will be at safe zone for a long time (about 180 days).

About INIC

Iran has recognized the significance of nanotechnology like other pioneering countries and started its activities in line with development of the technology. In this regard and as first step, a Study Committee for Nanotechnology in Iran began its activities in 2001 and finally Iran Nanotechnology Initiative Council (INIC) was established in the country in 2003. The INIC is tasked with determining the general policies for the development of nanotechnology in the country and pursuing the case with implementation of the policies.

About Amirkabir University of Technology

Amirkabir University of Technology is one of the oldest higher education technical and engineering institutes. Throughout many years and especially after the Islamic Revolution AUT has offered continuous service and has contributed to achieving many educational and research goals.